[resource] Text display

//Text display
//Character indexing
#define Chr_Space      float2( 0, 0) //  (space)     
#define Chr_Exclam     float2( 1, 0) //  !   
#define Chr_Quote      float2( 2, 0) //  "   
#define Chr_Pound      float2( 3, 0) //  #   
#define Chr_Dollar     float2( 4, 0) //  $   
#define Chr_Percent    float2( 5, 0) //  %   
#define Chr_And        float2( 6, 0) //  &   
#define Chr_sQuote     float2( 7, 0) //  '   
#define Chr_rBrac_O    float2( 8, 0) //  (   
#define Chr_rBrac_C    float2( 9, 0) //  )   
#define Chr_Asterisk   float2(10, 0) //  *   
#define Chr_Plus       float2(11, 0) //  +   
#define Chr_Comma      float2(12, 0) //  ,   
#define Chr_Minus      float2(13, 0) //  -
   
#define Chr_Dot        float2( 0, 1) //  .   
#define Chr_Slash      float2( 1, 1) //  /   
#define Chr_0          float2( 2, 1) //  0         
#define Chr_1          float2( 3, 1) //  1  
#define Chr_2          float2( 4, 1) //  2       
#define Chr_3          float2( 5, 1) //  3       
#define Chr_4          float2( 6, 1) //  4       
#define Chr_5          float2( 7, 1) //  5       
#define Chr_6          float2( 8, 1) //  6       
#define Chr_7          float2( 9, 1) //  7       
#define Chr_8          float2(10, 1) //  8       
#define Chr_9          float2(11, 1) //  9       
#define Chr_Colon      float2(12, 1) //  :       
#define Chr_sColon     float2(13, 1) //  ;       

#define Chr_Less       float2( 0, 2) //  <       
#define Chr_Equals     float2( 1, 2) //  =       
#define Chr_Greater    float2( 2, 2) //  >       
#define Chr_Question   float2( 3, 2) //  ? 
#define Chr_at         float2( 4, 2) //  @     
#define Chr_A          float2( 5, 2) //  A   
#define Chr_B          float2( 6, 2) //  B   
#define Chr_C          float2( 7, 2) //  C   
#define Chr_D          float2( 8, 2) //  D   
#define Chr_E          float2( 9, 2) //  E   
#define Chr_F          float2(10, 2) //  F   
#define Chr_G          float2(11, 2) //  G   
#define Chr_H          float2(12, 2) //  H   
#define Chr_I          float2(13, 2) //  I   

#define Chr_J          float2( 0, 3) //  J   
#define Chr_K          float2( 1, 3) //  K   
#define Chr_L          float2( 2, 3) //  L   
#define Chr_M          float2( 3, 3) //  M   
#define Chr_N          float2( 4, 3) //  N   
#define Chr_O          float2( 5, 3) //  O
#define Chr_P          float2( 6, 3) //  P
#define Chr_Q          float2( 7, 3) //  Q
#define Chr_R          float2( 8, 3) //  R
#define Chr_S          float2( 9, 3) //  S
#define Chr_T          float2(10, 3) //  T
#define Chr_U          float2(11, 3) //  U
#define Chr_V          float2(12, 3) //  V
#define Chr_W          float2(13, 3) //  W

#define Chr_X          float2( 0, 4) //  X
#define Chr_Y          float2( 1, 4) //  Y
#define Chr_Z          float2( 2, 4) //  Z
#define Chr_sBrac_O    float2( 3, 4) //  [
#define Chr_Backslash  float2( 4, 4) //  \
#define Chr_sBrac_C    float2( 5, 4) //  ]
#define Chr_Caret      float2( 6, 4) //  ^
#define Chr_Underscore float2( 7, 4) //  _
#define Chr_Punc       float2( 8, 4) //  `
#define Chr_a          float2( 9, 4) //  a
#define Chr_b          float2(10, 4) //  b
#define Chr_c          float2(11, 4) //  c
#define Chr_d          float2(12, 4) //  d
#define Chr_e          float2(13, 4) //  e

#define Chr_f          float2( 0, 5) //  f
#define Chr_g          float2( 1, 5) //  g
#define Chr_h          float2( 2, 5) //  h
#define Chr_i          float2( 3, 5) //  i
#define Chr_j          float2( 4, 5) //  j
#define Chr_k          float2( 5, 5) //  k
#define Chr_l          float2( 6, 5) //  l
#define Chr_m          float2( 7, 5) //  m
#define Chr_n          float2( 8, 5) //  n
#define Chr_o          float2( 9, 5) //  o
#define Chr_p          float2(10, 5) //  p    
#define Chr_q          float2(11, 5) //  q    
#define Chr_r          float2(12, 5) //  r    
#define Chr_s          float2(13, 5) //  s    

#define Chr_t          float2( 0, 6) //  t    
#define Chr_u          float2( 1, 6) //  u    
#define Chr_v          float2( 2, 6) //  v    
#define Chr_w          float2( 3, 6) //  w    
#define Chr_x          float2( 4, 6) //  x    
#define Chr_y          float2( 5, 6) //  y    
#define Chr_z          float2( 6, 6) //  z    
#define Chr_cBrac_O    float2( 7, 6) //  {    
#define Chr_vBar       float2( 8, 6) //  |    
#define Chr_cBrac_C    float2( 9, 6) //  }    
#define Chr_Tilde      float2(10, 6) //  ~    
#define Chr_tridot     float2(11, 6) // (...)
#define Chr_empty0     float2(12, 6) // (null)
#define Chr_empty1     float2(13, 6) // (null)
//Character indexing ends


texture RFX_Text      < string source = "ReShade/PersonalFiles/RFX_Text.png";   > {Width = 512;Height = 512;Format = RGBA8;};
sampler RFX_TextColor {	Texture = RFX_Text; };

#define Text_SIZE   10
#define Text_Ratio  5
#define Text_Hight  BUFFER_HEIGHT

float Text( float2 pos, float size, float ratio, float2 tex, float2 r[Text_SIZE])
{
    float  text = 0;
    float2 uv = (tex * Text_Hight - pos) / size;
    uv.y      = saturate(uv.y);
    uv.x     *= ratio * 0.5;
    if(uv.x  <= Text_SIZE && uv.x >= 0)
        text  = tex2D(RFX_TextColor, (frac(uv) + r[floor(uv.x)]) * float2( 0.5, 1) / 7).x;
    return text;
}

float Text_Width( int count, float size, float ratio)
{
    return size * count * 2 / ratio;
}


float Digit( float2 pos, float size, float ratio, float2 tex, int digit, float data)
{
    float2 digits[13] = {Chr_0, Chr_1, Chr_2, Chr_3, Chr_4, Chr_5, Chr_6, Chr_7, Chr_8, Chr_9, Chr_Minus, Chr_Space, Chr_Dot};
    
    float  text = 0;
    float2 uv = (tex * Text_Hight - pos) / size;
    uv.y      = saturate(uv.y);
    uv.x     *= ratio * 0.5;
    
    
    float  t  = abs(data);
    int radix = floor(log10(max(t, 0.00001)));
    radix     = (floor(t) == 0)? 0:radix; 

    float index = pow(10, floor(-uv.x) + step(1, uv.x)); //current digit
    index       = floor(frac(t * 0.1 / index) * 10);
    index       = lerp(lerp(10, 11, step(0, data)), index, step(-radix-1, uv.x));
    index       = (uv.x > 0 && uv.x < 1)? 12:index;
    
    if(uv.x <= digit && uv.x >= -radix-2)
        text    = tex2D(RFX_TextColor, (frac(uv) + digits[index]) * float2( 0.5, 1) / 7).x;
    return text;
}

float4 RFX_PS_TestDemo(in float4 position : SV_Position, in float2 texcoord : TEXCOORD0) : SV_Target0
{
    float test = RFX_frametime;
    float2 Text_0[Text_SIZE] = { Chr_D, Chr_e,     Chr_m, Chr_o, Chr_T, Chr_e, Chr_x, Chr_t, Chr_Space, Chr_b};   //Test 
    float2 Text_1[Text_SIZE] = { Chr_y, Chr_Colon, Chr_K, Chr_i, Chr_n, Chr_g, Chr_E, Chr_r, Chr_i,     Chr_c};   //Test 

    float4 res  = Text(float2(0, 800)                             , 32, Text_Ratio, texcoord.xy, Text_0);
           res += Text(float2(Text_Width(10, 32, Text_Ratio), 800), 32, Text_Ratio, texcoord.xy, Text_1);
           res += Digit(float2(Text_Width(8, 32, Text_Ratio), 832), 32, Text_Ratio, texcoord.xy, 5, test);
    return res;
} 

technique Text_Demo < enabled = false; toggle = VK_F1;>
{
    pass 
    {
        VertexShader = RFX_VS_PostProcess;
        PixelShader  = RFX_PS_TestDemo;
    }
}